Dynamic progressive collapse of steel moment frames under different fire scenarios

Yan Fei Zhu, Chang Hong Chen, Ying Huang, Zhao Hui Huang, Yao Yao, Leon M. Keer

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

Dynamic mechanisms for progressive collapse of steel moment-resisting frames are studied under different durations of a column removal due to different fire scenarios. Development process of natural fire and gas temperature are modeled and predicted by software fire dynamics simulator (FDS). The steel temperature is then predicted reliably using the method recommended by EN19993–1-2 incorporating the predicted gas temperature by FDS. Steel frames and columns exposed to fire are simulated by BEAM188 in ANSYS with APDL and then validated against experimental data obtained from other researchers. It can be found that the failure duration of a column is different under standard and natural fire conditions, similarly under different boundary conditions, namely, axial load, initial imperfection, axial restraint stiffness ratio and rotational restraint stiffness. Finally, a step-by-step analysis procedure is established using SAP2000 API with Excel VBA to determine structural response versus duration of a column failure.

源语言英语
文章编号106256
期刊Journal of Constructional Steel Research
173
DOI
出版状态已出版 - 10月 2020

指纹

探究 'Dynamic progressive collapse of steel moment frames under different fire scenarios' 的科研主题。它们共同构成独一无二的指纹。

引用此